Abstract
This study offers an application for the disengagement and adsorption of phosphorus, which can be used for the removal of phosphorus from the YATSU tidal flat, Chiba. Firstly, we measured the ionic behavior of the YATSU tidal flat water and mud with a cyclone aerator in a vessel. Phosphoric acid was released in the water when remains in the pH were low. Concentration of phosphoric acid decreases with concentration of nitrous, and nitric acids increase under anerobic conditions. There is a high degree of probability for the presence of microbes, which can accumulate and release phosphorus.
Secondly, we measured the removability of phosphorus from classified oyster shells using a batch system. The shell give off phosphoric acid up to 0.1∼0.4mg/L (survival concentration). In addition, we attempted to remove phosphoric acid and synthesize sphere particles. In the case of a template like Proteus mirabilis, it was confirmed that sphere calcium phosphate were in the condition of [Ca]0 : 17mmol/L, Ca/P value of 3.33. Comparable results obtained at [Ca]0=1.0×10−1mol/L in the case of a template like klebsiella pneumoniae H12, and it was suggested that the generation of surplus ammonia nitrogen harms local crystallization on solid-liquid interfaces
